Valve.



Patented Sept. l9, I899. F. M. BELL.

V A L V E.

(Application filed Apr. 4, 1898.)

(No Model.

IN VE N TOR Fran/z M Bell ATTORNEY.

MW W;

UNITED STATES PATENT OFFICE.

FRANK M. BELL, OF NEW' YORK, N. Y., ASSIGNOR TO OF SAME PLACE.

lVILLMA POLLAGK,

VALVE.

' SPECIFICATION forming part of Letters Patent No. 633,418, datedSeptember 19, 1899.

' Application filed April 4, 1898. erial No. 676,293. (No modell) To allwhom it may COIMVJIIL. I Be it known that I, FRANK M. BELL, a citizen ofthe United States, residing at the city of New York, in the county andState of New York, have invented certain new and useful Improvements inValves, of which the following is a full, clear, and exactspecification.

My invention relates to apparatus for controlling the ingress and egressof fluid to and from containers of divers forms; and said invention hasfor its object more particularly to provide a simple, eificient, anddurable valve for pumps and other apparatus used for hydraulic purposes,which valve may be readily inserted in the pump or other apparatus andwhen worn out by long-continued use be as readily removed and anotherinserted with out necessitating the taking apart of the entire pump orapparatus in which it is used.

To this end the invention consists in the novel details of constructionand in the combination, connection, and arrangement of parts, ashereinafter more fully set forth and then pointed out in the claims.

In the accompanying drawings, forming part of this specification,wherein like letters of reference indicate like parts, Figure 1 is asection taken on the line 1 l of Fig. 2, showing a portion of apump-casing and a valve arranged therein constructed according to andembodying my invention. Fig. 2 is a transverse section, the same beingtaken on the line 2 2 of Fig. 1, looking in the direction of the arrow;and Fig. 3 is an enlarged detail central section showing a modified formof valve-face.

In said drawings, A designates the pumpcasing, provided upon its innersurface with a shoulder B and screw-threads C, extending from theshonlderB to the end of the easing A.

D denotes a screw-cap for closing the endof the pump-casing A, saidcaphaving a short pipe-section Dprojecting from its outer side, adaptedfor securement to a pipe by a suitable joint or union.

E denotes a valve-casing made of metal or other suitable non-yieldingsubstance and provided upon its outer surface with screwthreads wherebysaid valve-casing E may be secured within the casing A, and F denotes acentrally-arranged opening which extends entirely through the casing E,said opening being of larger diameter at the bottom of the casing E thanat its top. lVithin said casing E are arranged the valve-seats G G,which correspond in outline with the valve-faces, and below saidvalve-seats G G are vertical wallsections H H, respectively, each ofsaid wall-sections being of larger diameter than the valve-face disposedtherein.

I 1 denote valve-faces made of soft rubber or other yielding substanceand provided upon their outer surfaces with centrally-located teats (ta, respectively.

The end of the opening F at the bot-tom of the casing E is provided withscrew-threads,

and in this threaded opening is secured a head J, having a centralopening J therein, and above said opening are arranged wire loops 0 c,having their ends secured in the head J, adjacent to the opening Jtherein. Upon the upper or rounded portion of said loops 0 c thevalve-face 1 is adapted to rest and sup ports the valve-face I when saidvalve-faces are not in contact with their respective seats, and byturning the head J the amountof play of the valvc-faces I I may beregulated. To facilitate this, the base of the casing E and the head Jare provided with recesses Z) Z) to receive the ends of a spanner.

lVhen the valve is designed for heavy work, I prefer to make the same inthe manner indicated at Fig. 3. In this construction the valve-face iscomposed of a thin shell of soft copper A, upon the outer surface ofwhich is disposed a facing B, of leather, rubber, or analogoussubstance, having its lower edge bent inward and then upward and securedto the inner side of the shell A by means of an annular band C andscrews a, extending through the band C, the covering B, and into theshell A, and D denotes a teat pro vided at its lower end with ascrew-section 1), whereby the said teat may be secured to thevalve-face, the shell A being made thicker at its top for the purpose ofgiving additional strength to the structure at that point and form abearing for the screw-section b of the teat D It will be apparent thatmany forms of valve-faces may be devised and that the same may be madeof different materials, the same depending to a large extent upon themate rial employed in making the valve-casing,

the main feature being that the valve-face must be formed of a substancewhich will be soft or yielding in relation to the substance forming thevalve-seat and be able to conform itself by pressure to its seat.

While I have shown the valve constructed with two valve-faces, one ofwhich is smaller than the other, I do not, however, confine myselfthereto, as anynumber of valve-faces may be employed and the same may beall of the same diameter, and where required springs maybe interposedbetween the valvefaces and the head J to maintain the valvefacesnormally seated.

Without limiting myself to the details of construction, which may bevaried within the scope of the invention, what I claim, and desire tosecure by Letters Patent, is-

1. A valve for the purposes specified com prising a casing having ahard, non-yielding valve-seat therein, and a relatively soft, yielding,concavo-convex valve-face adapted to expand under pressure into, andfill said seat, substantially as specified.

2. A valve for the purposes specified comprising a hard, non-yieldingcasing having a valve-seat therein, a relatively soft, yielding,concavo-convex valve-face adapted to expand under pressure into, andfill said seat, and means for regulating the movement of said valve-facewithin the casing, substantially as specified.

3. A valve for the purposes specified, com prising a casing having atapering opening therein, valve-seats arranged in said open ing,valve-faces adapted to conform-to said seats under pressure, a headadapted to be secured in the base of the casing, having an openingtherein, and loops 0, 0 extending upward from its upper surface, wherebyto limit the movement of the valve-faces when the head is turned in thebase of the casing, substantially as specified.

4. In a valve for the purposes specified, a valve-face comprising ashell of soft, yielding metal, a facing of softer, more yieldingmaterial disposed thereon, and means for securing said facing to themetal shell, substantially as specified. l

5. In a valve for the purposes specified, a valve-face comprising ashell of soft, yielding metal, reinforced at its center, a resilient facing disposed upon said shell, a teat centrally located in the outer sideof said valve-face, and secured in the reinforced portion of the shell,said facing having its edge turned inward and upward, and an annularband disposed upon said turned-o'ver edge and secured to the inner orunder side of the valveface, substantially as specified.

Signed at the city of New York, in the county and State of New York,this 2d day of April, 1898.

FRANK M. BELL. Witnesses:

WILLIAM L POLLAOK, GUSTAVE Drn'rnnron.

